Iingxaki zeValve eziqhelekileyo - I-High Pressure Drop ichaza ukufakwa kunye nokulungelelaniswa kweempompo ze-slag zoxinzelelo oluphezulu kunye neevalve

Iingxaki zeValve eziqhelekileyo - I-High Pressure Drop ichaza ukufakwa kunye nokulungelelaniswa kweempompo ze-slag zoxinzelelo oluphezulu kunye neevalve

Ngenxa yomehluko PHAKATHI KOXINEZELEKO ELIPHEZULU KUNYE NOXINEZELEKO olusezantsi, UKUHAMBA ngevalvu KUBIZWA NGAKHO IXINZELELO LOXINZELELO Ngenxa yomahluko phakathi koxinzelelo oluphezulu kunye nolusezantsi, ukuhamba ngevalve kubizwa ngokuba yi-OP yoxinzelelo, okanye uxinzelelo lokwahlukana. Ukuba Ubukhulu bomgca BUYE LUFUNYENILEYO UPSREAM FUNYE UDOWNSTREAM YEvalve KUNYE NOQHAGAMSHELO LUQHUBEKAYO, Ivalve KUFUNEKA IYIYIKWE I-FRICTIONAL lahleko UKUNCIPHISA UXINEZELEKO LOKHUPHULUKO UKUZE IPHUMELELE. Inxalenye yelahleko yokukhuhlana kwevalve ibangelwa kukuhlikihlwa kolwelo kunye nodonga lwevalvu. Nangona kunjalo, le ngxabano incinci kwaye ayikwazi ukuvelisa ukuhla koxinzelelo olwaneleyo kulwelo olufanelekileyo. Indlela esebenzayo ngakumbi yokuvelisa ilahleko enkulu yoxinzelelo kwivalvu kukungqubeka kumzimba wevalvu. Ngenxa yokuba iivalve ezininzi zenzelwe ukuvumela ukuba inxalenye yevalve ibe yi-NARROWER THAN LINE, inokubonelela ngokulula i-THROttLING kwi-FLUID layer. NGENXA YOMTHETHO WOKULONDOLOZA, NJENGOKO ULWEZO LUSONDELA KWI-valve, isantya sawo siyenyuka ukuze WONKE ULWEZO LUDLULA KWI-VALVE.
Ngokuchasene noko, ukuhla kwengcinezelo ehambelanayo kwenzeka (Umfanekiso 9.1). Ubudlelwane obuphambeneyo phakathi koxinzelelo kunye nesantya bubonakaliswa yifomula kaBernoulli ngolu hlobo lulandelayo:
Esona santya siphezulu kunye noxinzelelo oluphantsi lwenzeka ezantsi kowona mqobo ucutheneyo wentamo, obizwa ngokuba licandelo lokuthotywa. Umzobo 9.2 UBONISA UKUBA ICANDELO LE-CONTRACTILE AYIZIZIPHATHELI NGOKWALO, KODWA LIMgama EMVA KOMTHETHO OYAHLUKA KUNYE NOXINEZELO OLUNXINENEYO. Xa isantya secandelo lekhontrakthi sisona santya siphezulu, indawo yokuqukuqela yomaleko wolungiselelo ingowona mncinci. Emva kwecandelo lokunciphisa, ukuhamba kunciphisa kwaye uxinzelelo luphakama kwakhona, kodwa alufikeleli kwixabiso lokuqala loxinzelelo oluphezulu. Umahluko PHAKATHI koxinzelelo lwe-UPSTREAM kunye noxinzelelo lwe-DOWNSTREAM KUBANGWA yilahleko yefriction NJENGOKO ulungiselelo lokuhamba luhamba ngevalve kwaye lubizwa ngokuba yi-PERMANENT pressure DROP. Umahluko woxinzelelo phakathi koxinzelelo kwicandelo lekhontrakthi kunye noxinzelelo olusezantsi lubizwa ngokuba yi-pressure recovery. Umzobo olula wokuhla koxinzelelo olusisigxina kunye nokubuyiswa koxinzelelo kuboniswe kuMzobo 9.3. Ukutywinwa okusebenzayo kweempompo ze-slag eziphezulu zoxinzelelo kunye neevalve kuxhomekeke kwimeko yonke yecandelo ngalinye. Ingqwalasela ekhethekileyo kufuneka ihlawulwe kwisiqinisekiso sokuba izixhobo ezifuna ukutshintshwa kwengcambu ye-pan ziye zahlulwa ngokufanelekileyo ngokuhambelana nesayithi kunye nenkqubo ngaphambi kokufakwa kwengcambu ye-pan. Oku kulandelayo kusetyenziselwa ukukhokela abasebenzi bolondolozo, iinjineli, kunye nabahlanganisi ukufaka ngokufanelekileyo kunye nokulungelelanisa ingcambu ye-pan.
Ukutywinwa okusebenzayo kwempompo ye-slag yoxinzelelo oluphezulu kunye ne-valve kuxhomekeke kwimeko yonke yamacandelo ngamanye. Ingqwalasela ekhethekileyo kufuneka ihlawulwe kwisiqinisekiso sokuba izixhobo ezifuna ukutshintshwa kwengcambu ye-pan ziye zahlulwa ngokufanelekileyo ngokuhambelana nesayithi kunye nenkqubo ngaphambi kokufakwa kwengcambu ye-pan. Oku kulandelayo kusetyenziselwa ukukhokela abasebenzi bolondolozo, iinjineli, kunye nabahlanganisi ukufaka ngokufanelekileyo kunye nokulungelelanisa ingcambu ye-pan.
1. Izixhobo ezikhethekileyo, i-high-pressure slag oil pump kunye nesixhobo sokuqinisa kufuneka sisetyenziswe ukuqinisa i-nut nut xa ingcambu ye-pan endala isusiwe kwaye ithathelwe indawo entsha. Ukongezelela, ukusetyenziswa rhoqo kweendawo zokhuseleko ezisemgangathweni kunye nokuthotyelwa kwemigaqo yokhuseleko efanelekileyo kuyadingeka. Ngaphambi kofakelo, ziqhelanise nezi zixhobo zilandelayo: umatshini wokusika ukukhangela i-disk root ring, khangela i-torque wrench okanye i-wrench, umnqwazi oqinileyo, i-caliper yangaphakathi nangaphandle, i-lubricant yesixhobo sokuqinisa, isibonisi, i-pan root extractor, isixhobo sokusika ingcambu, i-vernier calipers. , njl
2. Ukucoca kunye nokuhlolwa
I-1) Kancinci ukhulule i-nut ye-gland yebhokisi yokuhlohla ukukhulula lonke uxinzelelo olushiyekileyo kwindibano yeengcambu ze-pan;
2) Susa naziphi na iingcambu ezidala kwaye uhlambulule ngokucokisekileyo ibhokisi yokufaka i-shaft / intonga;
3) Khangela ukuba i-shaft / intonga ine-corrosion, i-dents, i-scratches okanye ukuguga ngokugqithiseleyo;
4) Khangela ukuba ezinye iindawo zine-burrs, ii-cracks, i-wear, ziya kunciphisa ubomi beengcambu;
5) Khangela ukuba ibhokisi yokuhlohla inokukhutshwa okukhulu kakhulu, kunye ne-shaft / intonga eccentricity;
6) Faka iindawo ezineziphene ezinkulu;
7) Khangela ingcambu endala njengesiseko sokuhlalutya ukungaphumeleli ukufumana isizathu sokungaphumeleli kwangaphambili kwengcambu.
3. Ukulinganisa kwaye urekhode ububanzi be-shaft / intonga, indawo yokuvula kunye nobunzulu bebhokisi yokugxusha, kunye nomgama ukusuka ezantsi ukuya phezulu kwibhokisi yokupakisha urekhodwa xa umsesane uvalwe ngamanzi.
4, khetha ingcambu
1) Qinisekisa ukuba i-pan ekhethiweyo kufuneka ihlangabezane neemeko zokusebenza ezifunwa yinkqubo kunye nezixhobo;
2) Ngokweerekhodi zokulinganisa, bala indawo enqamlezileyo yengcambu kunye nenani lamakhonkco eengcambu ezifunekayo;
3) Khangela ingcambu ukuze uqinisekise ukuba akukho ziphene;
4) Ngaphambi kokufaka, qinisekisa ukuba izixhobo kunye neengcambu zicocekile.
I-5, ukulungiswa kwekhonkco lengcambu
1) Braid iingcambu ngokujija iingcambu kwi-shaft yobungakanani obufanelekileyo, okanye usebenzisa i-calibrated root ring cutter; Ngokucocekileyo SIKA IIMPANDU ZEDISCI UBE EBUTT (ISIkwere) OKANYE UMITA (30-45 DIGREES) NJENGOKO KUFUNEKA, I-RING ENYE NGEXESHA, UZE UJONGE UBUKHULU OBUNE-SHAFT OKANYE ISIQINISO.
2) Iidiski ezibunjiweyo ziqinisekisa ukuba ubungakanani bomsesane buhambelana ngqo ne-shaft okanye isiqu. Ukuba kuyimfuneko, sika amakhonkco okupakisha ngokwemiyalelo yokusebenza yomenzi okanye iimfuno.
6. Faka ingcambu yediski ngononophelo iringi enye ngexesha, kwaye ujikeleze iringi nganye kwi-shaft okanye kwisiqu. Ngaphambi kokufaka i-ring elandelayo, qinisekisa ukuba i-ring ibekwe ngokupheleleyo kwibhokisi yokufaka, kwaye i-ring elandelayo kufuneka igxininiswe, ubuncinane i-90 degrees ngaphandle, ngokubanzi i-120 degrees. Emva kokuba i-ring yokugqibela ifakwe, qinisa i-nut ye-high-pressure slag oil pump ngesandla, kwaye ucinezele i-gland ngokulinganayo. Ukuba kukho umsesane wokutywina wamanzi, kufuneka kuhlolwe ukuba umgama ovela phezulu kwibhokisi yokufaka ulungile. Kwakhona qinisekisa ukuba i-shaft okanye isiqu sinokujikeleza ngokukhululekileyo.
7. Lungisa i-pan ingcambu yempompo yeoli ye-slag ephezulu yoxinzelelo
1) impompo enengcambu ye-pan
(1) Qhubeka uqinisa i-nut nut ngesandla;
(2) Emva kokuvula impompo, lungisa i-nut yedlala ukuvumela ukuvuza okungakumbi;
(3) Kancinci uqinise i-nut ye-gland ukunciphisa kancinci ukuvuza de ukuvuza kufikelele kwinqanaba elamkelekileyo;
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(5) Lungisa umlinganiselo wokuvuza ukuze ufikelele kwisimo esizinzileyo.
2) Qhagamshelana nomenzi wekhoyili okanye isebe lobuchwephesha beshishini malunga nemigaqo yetorque okanye ipesenti yoxinzelelo lwevalve enengcambu yekhoyili, kwaye uqinise i-nut yedlala ngolu hlobo lulandelayo:
(1) Faka itorque kwi-gland nut ukuya kuma-30% etorque epheleleyo okanye ipesenti yoxinzelelo lweqela;
(2) vula ngokuphindaphindiweyo kwaye uvale ivalve amaxesha amaninzi, xa ivalve ikwindawo evaliweyo, sebenzisa yonke i-torque;
(3) Phinda inyathelo (2)3 okanye 4 amaxesha.
8. Qinisa kwaye ubuyisele kwakhona emva kweeyure eziliqela zokusebenza, jonga isimo sokulungelelaniswa kwe-gland yepompo ye-oyile ye-slag ephezulu yoxinzelelo, qinisa xa kuyimfuneko, kwaye ubeke indawo yengcambu ye-pan xa i-gland ingakwazi ukulungiswa ngakumbi.